Analysis of Algorithm for Eating Snakes (5)
James @ www.chenshen.com
Wormmain
The most important class, inheriting from the MIDLET parent class and implements the CommandListener interface.
l protected void startapp ()
Implement the MIDlet parent class, first execute this function when the program is started
// Show
Display.getdisplay (this) .Setcurrent (THEGAME);
Try {
// Start the game thread
Thread mythread = new thread (thegame);
mythread.start ();
} catch (error e) {
DESTROYAPP (FALSE);
NOTIFYDESTROYED ();
l Public void CommandAction (Command C, Displayable D)
Accept and process user input events
// restart
IF (c == restartCMD) {
THEGAME.RESTART ();
}
/ / Change the difficulty level
IF (c == levelcmd) {
Item [] levelitem = {
New Gauge ("Level", True, 9, THEGAME.GETLEVEL ())
}
Form f = new form ("Change Level", LevelItem);
F.Addcommand (OKCMD);
f.addcommand (CancelCMD);
F.setCommandListener (this);
Display.getdisplay (this) .SetCurrent (f);
}
// Leave the game
IF (c == exitcmd) {
DESTROYAPP (FALSE);
NotifyDestroyed ();
}
// Start the game
IF (c == startcmd) {
THEGAME.Remmand (StartCMD);
THEGAME.ADDCOMMAND (RESTARTCMD);
THEGAME.RESTART ();
}
// Determine
IF (c == okcmd) {
Form f = (form) d;
Gauge g = (gauge) F.Get (0);
Thegame.SetLevel (g.getvalue ());
Display.getdisplay (this) .Setcurrent (THEGAME);
}
// cancel
IF (c == cancelcmd) {
Display.getdisplay (this) .Setcurrent (THEGAME);
}
// Open the sound
IF (c == audiooncmd) {
/ * Open sound * /
THEGAME.CREATEAUDIOPLAYER ();
THEGAME.Remmand (Audiooncmd);
THEGAME.ADDCOMMAND (AUDIOOFFCMD);
}
// Close the sound
IF (c == audiooffcmd) {
/ * Close the sound * /
THEGAME.DESTROYAUDIOPLAYER ();
THEGAME.REMOVECOMMAND (AUDIOOFFCMD);
THEGAME.ADDCOMMAND (AUDIOONCMD);
}
About the Author:
Shen Yachang, Senior Programmer, SCJP
Www.chenshen.com
Jinashen@benq.com
August 10, 2003
